The afterlife is the belief that a crucial part of an individual’s identity continues after the death of the physical body.
According to various ideas about the afterlife, the crucial aspect of the individual that lives on after death, this may be some partial element, or the entire soul or spirit, of an individual, which carries with it and may give personal identity.
In some views, this continued existence often takes place in a spiritual realm, and in other popular views, the individual may be reborn into this world and begin the life cycle over again, likely with no memory of what they have done in the past.
Also, some belief systems, such as Christianity, hold that the dead goes to a specific plane of existence after death, as determined by God, or other divine judgment, based on their actions or beliefs during life. Those in the Indian religions, the nature of the continued existence is determined directly by the actions of the individual in the ended life.
The possibility of an afterlife has attracted artists, philosophers, and many scientists throughout history. Fear, hope, terror, happiness; these are some things we ponder about when we think of the afterlife.
But what does science know about the afterlife? If we knew that we went somewhere after we died, would we lead better lives? Or would we shrug off our earthly duties, knowing that death wasn’t the end? Death is not as straightforward as you might think.
The heart can continue to beat for a full week after the brain dies. This was shown by UCLA’s 1998 study. These 175 bodies were still functioning one week after brain death, called beating heart cadavers.
Could they be unable to make the final jump into the afterlife? We can’t tell for sure.
The closest we can get to discovering concrete answers is by looking at near-death experiences. According to a 2014 Gallup poll, eight million Americans claim they have had a near-death-experience. And that’s just in one country.
Stories across the globe describe the same sort phenomena happening around the time of death, either being surrounded by a bright light or seeing a being made of bright light. This experience is so prevalent that Bruce Greyson developed the Greyson NDE Scale in 1983.
This scale determines if a person had a near-death experience based on their answers to 16 questions, such as: “Did you see, or feel surrounded by, a brilliant light?” “Did you seem to enter some other unearthly world?”
In a four-year study of awareness during resuscitation, the University of Southampton found that 39 percent of cardiac arrest survivors claimed to have been aware of their surroundings before their heart was restarted. In most cases, the brain stops working 30 seconds after the heart stops beating.
Yet in this study, people claimed they were conscious for up to three minutes after their heart stopped. The survivors’ experiences included time slowing down or speeding up, out of body experiences, or a peaceful feeling.
Some even had distinct memories of their surroundings. These experiences make sense when you know that brain activity spikes around the time of death.
A 2010 study from the George Washington University Medical Center studied the EEGs, or electroencephalograms, of seven critically ill patients as they were taken off life support. The patients showed a spike of neural activity near death that lasted from 30 seconds to three minutes.
Are these spikes in mental activity proof of an afterlife? The short answer is no.
Neuroscientist Andrew Newberg speculates that our parasympathetic nervous system, and sympathetic nervous system, begin operating at full speed in near-death experiences. These two systems rarely work side by side, and the combination could create all those other-worldly experiences that people report. But this, too, is just a theory.
What if a scientist makes the world-changing discovery of an afterlife? How would that affect the way we live?
That could depend on the type of afterlife. Let’s say there are different characteristics of an afterlife, and the way you lived on Earth determined where you go after death.
If this was a hard fact that everyone knew, then we would probably strive to be much better people. People would have different opinions about what factors would be the most rewarded in the afterlife, and this would be a point of conflict.
There might even be a whole new field of science dedicated to discovering the rules of the afterlife. But what if the opposite is discovered? What if there is just one place where everyone goes, no matter what they did while alive?
Researchers have found that when reminded of death, people tend to shop more, drink more, eat more, smoke more, in other words, they live it up. This doesn’t bode well for a reality where the afterlife is just one happy, responsibility-free destination.
It would be easy for people to decide that what happened on Earth, or to the Earth, doesn’t matter. There could even be an increase in reckless behavior and suicide. Death cults, anyone?
Even if scientists prove the existence of an afterlife, the reality is that they wouldn’t know how that afterlife functioned. The only people who would know what it was like would be, dead.
People’s understanding of the afterlife would still be formed by their personal beliefs. We will probably never know if there is an afterlife. But luckily for us, we have longer to live than ever before.
A century ago, the average life expectancy dipped as low as age 23 in countries like South Korea and India. Today, the average global life expectancy is 73.
It would be wise for us to use our longer lifespans to do good on the Earth that we have. The afterlife may or may not exist, but the world that we live in today does.